Computer power supply with a display function

• US 7,081,719 B2
• Filed: 08/12/2004
• Issued: 07/25/2006
• Est. Priority Date: 06/01/2004
• Status: Expired due to Fees

• Current Assignee: Cooler Master Co. Ltd.
• Original Assignee: Acbel Polytech Incorporated, Cooler Master Co. Ltd.
• Inventors: Cheng, Yu-Hong, Chang, Yung-Shih
• Primary Examiner(s): Tran, Thuy V.
• Assistant Examiner(s): Alemu, Ephrem
• Application Number:
  US10/916,962
• Publication Number:
  US 20060033451A1
• Time in Patent Office: 712 Days
• Field of Search: 340/500, 340/540, 340/635, 345211-213, 363/13, 363/146, 363/21.01, 363/50, 315/247, 315/129
• US Class Current: 315/247
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: G06F 1/28 Supervision thereof, e.g. detecting power-supply failure by out of limits supervision

Abstract

A computer power supply with a display function has a rectifying circuit, an EMI filter, a power factor corrector, a switching circuit, a transformer and a secondary coil voltage regulator located between an AC voltage input and a DC voltage output. A linear rectifying circuit as a major technique connects to the output of the power factor corrector to detect power dissipation and represent the result in a display, thus user can take necessary measures when a computer draws excessive power.

Claims

1. A computer power supply with a display function, the computer power supply connected with a display having a display panel and a pointer, wherein the display is coupled to an output of a power factor corrector through a linear rectifying circuit, whereby the operating power dissipation value is obtained and shown in the display.

2. The computer power supply with a display function as defined in claim 1, the computer power supply comprising:

a rectifying circuit connected to an AC computer power supply;

the power factor corrector connected to the rectifying circuit through an EMI (Electromagnetic Interference) filter to correct a power factor of a DC voltage from the EMI filter and to output a high voltage;

a switching circuit connected between the power factor corrector and a primary coil of a transformer;

a drive circuit connected to the power factor corrector and the switching circuit; and

a secondary coil voltage regulator connected to a secondary coil of the transformer to transform and provide various DC voltages.

3. The computer power supply with a display function as defined in claim 2, wherein the linear rectifying circuit is coupled to the output terminal of the power factor corrector through a coupling coil.

4. The computer power supply with a display function as defined in claim 3, wherein the linear rectifying circuit consists of diodes, capacitors and resistors.

5. The computer power supply with a display function as defined in claim 4, wherein LEDs are mounted on a back face of the display panel.

6. The computer power supply with a display function as defined in claim 4, wherein multiple-segment scales are set in the display panel, and the pointer indicates an accurate scale corresponding to a power value of the power supply.

7. The computer power supply with a display function as defined in claim 6, wherein the display panel is divided into different colors based on the magnitude of the scales.

8. The computer power supply with a display function as defined in claim 7, wherein LEDs are mounted on a back face of the display panel.